Home / 118,779.39-163,970.25-70,378.11

Finding the Fourth Proportional to 118,779.39, 163,970.25 and 70,378.11

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Solution

The fourth proportional to 118,779.39, 163,970.25 and 70,378.11 is: 97,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,779.39 : 163,970.25 = 70,378.11 : x
  2. Step 2: Convert to fraction form
    118,779.39/163,970.25 = 70,378.11/x
  3. Step 3: Cross multiply
    118,779.39x = 163,970.25 × 70,378.11
  4. Step 4: Simplify right side
    118,779.39x = 11,539,916,291.23
  5. Step 5: Solve for x
    x = 11,539,916,291.23/118,779.39
  6. Step 6: Final answer
    x = 97,154.20

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1.5x scale

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.