Home / 138,689,050-191,391,528.36-76,808,091.28

Finding the Fourth Proportional to 138,689,050, 191,391,528.36 and 76,808,091.28

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Solution

The fourth proportional to 138,689,050, 191,391,528.36 and 76,808,091.28 is: 105,995,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,689,050 : 191,391,528.36 = 76,808,091.28 : x
  2. Step 2: Convert to fraction form
    138,689,050/191,391,528.36 = 76,808,091.28/x
  3. Step 3: Cross multiply
    138,689,050x = 191,391,528.36 × 76,808,091.28
  4. Step 4: Simplify right side
    138,689,050x = 14,700,417,980,493,590
  5. Step 5: Solve for x
    x = 14,700,417,980,493,590/138,689,050
  6. Step 6: Final answer
    x = 105,995,520.05

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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.