Home / 129,056,081.09-178,097,417.54-70,318,746.21

Finding the Fourth Proportional to 129,056,081.09, 178,097,417.54 and 70,318,746.21

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Solution

The fourth proportional to 129,056,081.09, 178,097,417.54 and 70,318,746.21 is: 97,039,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,056,081.09 : 178,097,417.54 = 70,318,746.21 : x
  2. Step 2: Convert to fraction form
    129,056,081.09/178,097,417.54 = 70,318,746.21/x
  3. Step 3: Cross multiply
    129,056,081.09x = 178,097,417.54 × 70,318,746.21
  4. Step 4: Simplify right side
    129,056,081.09x = 12,523,587,104,300,068
  5. Step 5: Solve for x
    x = 12,523,587,104,300,068/129,056,081.09
  6. Step 6: Final answer
    x = 97,039,883.74

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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.