Home / 79,238,430.80-118,857,646.20-72,223,409.60

Finding the Fourth Proportional to 79,238,430.80, 118,857,646.20 and 72,223,409.60

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Solution

The fourth proportional to 79,238,430.80, 118,857,646.20 and 72,223,409.60 is: 108,335,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,238,430.80 : 118,857,646.20 = 72,223,409.60 : x
  2. Step 2: Convert to fraction form
    79,238,430.80/118,857,646.20 = 72,223,409.60/x
  3. Step 3: Cross multiply
    79,238,430.80x = 118,857,646.20 × 72,223,409.60
  4. Step 4: Simplify right side
    79,238,430.80x = 8,584,304,465,594,483
  5. Step 5: Solve for x
    x = 8,584,304,465,594,483/79,238,430.80
  6. Step 6: Final answer
    x = 108,335,114.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.