Home / 108,715.69-149,888.77-70,407.55

Finding the Fourth Proportional to 108,715.69, 149,888.77 and 70,407.55

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Solution

The fourth proportional to 108,715.69, 149,888.77 and 70,407.55 is: 97,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,715.69 : 149,888.77 = 70,407.55 : x
  2. Step 2: Convert to fraction form
    108,715.69/149,888.77 = 70,407.55/x
  3. Step 3: Cross multiply
    108,715.69x = 149,888.77 × 70,407.55
  4. Step 4: Simplify right side
    108,715.69x = 10,553,301,068.21
  5. Step 5: Solve for x
    x = 10,553,301,068.21/108,715.69
  6. Step 6: Final answer
    x = 97,072.47

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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.