Home / 99,011.16-136,638.90-70,784.28

Finding the Fourth Proportional to 99,011.16, 136,638.90 and 70,784.28

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Solution

The fourth proportional to 99,011.16, 136,638.90 and 70,784.28 is: 97,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,011.16 : 136,638.90 = 70,784.28 : x
  2. Step 2: Convert to fraction form
    99,011.16/136,638.90 = 70,784.28/x
  3. Step 3: Cross multiply
    99,011.16x = 136,638.90 × 70,784.28
  4. Step 4: Simplify right side
    99,011.16x = 9,671,886,156.49
  5. Step 5: Solve for x
    x = 9,671,886,156.49/99,011.16
  6. Step 6: Final answer
    x = 97,684.81

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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.