Home / 128,005,390.28-176,648,506.80-75,113,725.16

Finding the Fourth Proportional to 128,005,390.28, 176,648,506.80 and 75,113,725.16

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Solution

The fourth proportional to 128,005,390.28, 176,648,506.80 and 75,113,725.16 is: 103,657,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,005,390.28 : 176,648,506.80 = 75,113,725.16 : x
  2. Step 2: Convert to fraction form
    128,005,390.28/176,648,506.80 = 75,113,725.16/x
  3. Step 3: Cross multiply
    128,005,390.28x = 176,648,506.80 × 75,113,725.16
  4. Step 4: Simplify right side
    128,005,390.28x = 13,268,727,389,699,592
  5. Step 5: Solve for x
    x = 13,268,727,389,699,592/128,005,390.28
  6. Step 6: Final answer
    x = 103,657,567.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.